There are options, though nothing perfect. To recap from earlier in the thread: Daily injections of propionate blends give at least a crude approximation of normal diurnal variation. I found them to be better than options giving steadier levels. However, you still get HPTA shutdown, which I view as a likely contributing factor to poor results with TRT. The proven HPTA-preserving, short-acting forms of testosterone are nasal gels and buccal troches. Neither is particularly convenient for the long run. But when absorbed in correct amounts they can at least show a guy what a little extra T can do while his HPTA is still working. Importantly, the Natesto clinical trials show that seemingly unnatural short peaks in serum testosterone can resolve hypogonadism; you don't need some perfect diurnal rhythm.
Oral testosterone is intermediate and more convenient. You get nice daily peaks but more HPTA suppression. Maximus's version is the most promising, but you still need enclomiphene to maintain decent HPTA activity.
I continue to dabble with testosterone suspension. It's more suppressive than I originally had hoped, but it is viable with concomitant gonadorelin. Unfortunately it's a loser with respect to convenience.
Not sure if it's "burnout", but I attribute all of the common side effects to continually elevated testosterone and/or HPTA shutdown:
high hematocrit, sleep disruptions, ED, loss of sensitivity, loss of libido, high estradiol, high prolactin, etc. I've experienced all of these except elevated hematocrit.